<template>
  <div>
     <label v-for="(item,index) in arr" :key="index"><input type="checkbox" v-model="list" :value="item">{{item}}</label>
     <p>你创建的元素，累加的值为{{sum}}</p>
   </div>
</template>
 
<script>
export default {
  name: "App",
  components: {},
  props: {},
  data() {
    return {
      arr:[9, 15, 19, 25, 29, 31, 48, 57, 62, 79, 87],
      list:[]
    };
  },
  computed: {
    sum(){
      return this.list.reduce((sum,item)=>sum+item,0)
    }
  },
  watch: {},
  created() {},
  methods: {}
};
</script>

<style scoped>
     
</style>